EMC1203 Standard Microsystems Corporation, EMC1203 Datasheet - Page 9

• Manufacturer Part Number: EMC1203
• Description: Triple/quad Single-wire Temp Sensor in Msop-8 Using SMSC Budgetbus Sensor Interface
• Manufacturer: Standard Microsystems Corporation

Triple/Quad Single-Wire Temp Sensor in MSOP-8 Using SMSC BudgetBus
Datasheet
SMSC EMC1203/EMC1204
3.4
3.5
ACTUAL TEMP.
Diode Fault
Temperature readings are coded in 2’s complement format with a -64ºC offset. This format spans from
–63.875ºC to +191.875ºC with 0.125ºC resolution. A temperature measurement outside this range is
reported as either –63.875ºC or +191.875ºC. The host must add 64ºC to calculate the actual
temperature.
BBUS.
As shown in
conditions are detected between the external DP and DN pins.
The conversion rate can be controlled by the host. This is accomplished by periodically placing the
device in standby as described in
Temperature Data Format
Conversion Rate
-63.875
-63.000
+0.125
+1.000
-1.000
0.000
(ºC)
Table 3.1
Table
3.1, 400h is reserved for diode fault signaling which occurs when open or short
shows example temperature readings and the value that will be reported on the
Table 3.1 Temperature Data Format
2’S COMPLEMENT
OF -64ºC OFFSET
Section
DATASHEET
100 0000 0000
100 0000 0001
100 0000 1000
110 0000 0000
110 0000 0001
110 0000 1000
101 1111 1000
3.3.
TM
7
Sensor Interface
HEX
400
401
408
5F8
600
601
608
Revision 1.1 (06-12-06)